I have been researching into similar topics and this is what I found:
1. These communities lack the very basic waste management infrastructure like trash bins or other... 2. Similar clean-up efforts launched in India succeeded when they were self-sustaining 3. To make the solution self-sustaining, involve the local community. Some of the ideas could be: a. Set up a Waste Recycling Plant - need govt help and funding b. Serve as a supplier for local recycling plans. - This has been the more successful idea in previous implementations when I talked to waste management experts c. Create local cottage industries which use the waste. Paper Pulp after being treated properly is used to create handmade jewelery.
I believe any idea developed should be local and sustainable.